Roller Wheel Jungle Roll is an interesting game where you win by landing 5 or more of the same symbol on adjacent reels from left-to-right starting with the leftmost reel: the more you land, the greater your reward. There is also a "Rolling Reveals" feature where special symbols that land will all evaluate to the same symbol, including the Free Spins symbol!
The Roller Wheel Feature is triggered by landing bonus symbols on reels 1, 3 and 5 for one spin of the Roller Wheel for either the Free Spins Bonus, a Wild Spin, a Jackpot Wedge or a Progressive Wedge. A "Wild Spin" is a special spin where additional wilds are added to the reels.
The "Free Spins Bonus" is triggered by landing 5 or more Free Spins symbols on adjacent reels from left-to-right, starting with the leftmost reel or through the Roller Wheel Feature. During this bonus, the reels expand to twice their height giving you a better shot at that Big Win or Jackpot, Enjoy!